Desarrollo de un banco didáctico para modelo de turbina eólica de eje vertical

Abstract

The use of Buckingham's Π theorem allows the recognition of variables of interest in studies with models in wind tunnels. With this, it is possible to replicate and reduce prototypes in laboratory models for the measurement of geometric, dynamic and kinematic values. The following document presents the mathematical and mechanical development of a Darrieus H rotor for a didactic vertical axis wind bank. The creation of said model is based on the reduction of an existing prototype, the dimensions of the model are shown in parametric equations determined by means of the Pi Buckingham theorem, in the same way a CAD design of the rotor with the calculated dimensions is shown, the design and the wind tunnel and the structure that supports said loads. The rotor construction was mainly focused on the elaboration of the aerodynamic profiles, which were carried out in the machining center of the laboratories of the Faculty of Mechanical Engineering of the Santo Tomas Tunja University. Three blades were machined on solid cast aluminum blocks. Once this process was finished, the assembly and assembly of the different parts that make up the rotor were continued. Finally, the start-up of the equipment and the performance of measurements on different flow variables selected by means of a variable speed drive connected to an extractor fan located at the rear of the bench.